Soft-wood corner reenforcement



June 12. 1928. 1,673,565

E. HEATH SOFT WOOD CORNER REENFORCEMENT Filed Nov 25, 1927 Patented June12, 1928. V

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Thisinvention irelatesto timprqvementseinz More particularly it is anobject to provide for soft wood closure elements an insert of hard woodat the exposed corners of the soft Wood when the latter is used ininclosure elements, such as door casing or frame construction.

Another objectis to providea reenforcing insert corner strip which willprevent a frame of soft wood such as used in doors from substantiallyany warping.

In the drawings:

Figure l is an isometric view of a door and door casing embodying thisinvention.

Figure 2 is an enlarged sectional view of a portion of the door.

Like parts are identified by the same reference characters throughoutthe several views.

The invention is particularly useful in the manufacture of closureelements, such as doors and door casings, since the corners of the sameare exposed and are frequently damaged by engagement withlarticlespassing through the door way or opening. More over, it is-desirable thatthe exposed corners of such closure elements withstand rou h usage so asto maintain the original close t, whereby to dispense with the necessityfor the application of facing or weatherstrip ping after a period ofusage.

A still further object of the invention is to provide in a closureelement a corner re- .enforcement which will not be marred whensubjected to ordinary use, and which may, furthermore, be readilymatched up with the remainder of the element so that the reenforcementwill not be conspicuous. The ineach made of soft wood and the cornersare reenforced by strips of hard wood 3. These strips are glued inposition in grooves,

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l iv t t iaen qf c s o he! oft oedr w l eg nnaree orner; ia ling acharacteristic strength of hardwood may be presented in all exposededges ofsoft- Wood casing, frames, etc. Furthermore, any tendencywhichvthe soft wood may have toward warping will be opposed by the hardwood strips which have less tendency to wards warping than the softwood. p

While the advantages gained by the in- Vention are mainly those ofstrength and durability of structure, nevertheless the beauty of thewoodis not detractedfromforced as disclosed herein, have the appearance 'ofbeing veneeredand one viewing them will observe a marked and pleasingcontrast between the kinds of Wood found in the structure. 1 p

I am aware of the fact that "metal strips may be used in the place ofthe'hard Wood 3. However, I prefer the hard wood but do not wish tolimit all of theclaims to such. Hard Wood is preferred forthe reasonthat wood reenforced according to this invention may be easily planed orsawed to sizes desired.

Another very desirable result attained by this invention is observedwhere the corners of certain woods are reenforced as disclosed herein.It is well known that such woods as fir, spruce, etc. are very apt tosliver at cor ners alongthe grain of the wood. Where such woods arereenforced at corners with strips of wood as specified herein, the grainof the wood is not exposed at such corners In fact soft wood frames orcasings reen and consequentlyfwill not be damaged by having a woodedgeand face, a longitudinally grooved corner joining said edge andface, an insert of relatively harder material in said groove exposed atsaid corner and projecting beyond the edges of the groove, said inserthaving surfaces disposed in substantially the planes of the wooden edgeand face of said closure element whereby to merge with said edgeand'face.

.2. A closure elementformed of wood and having a wood edge and face, alongitudinally grooved corner joining said edge and face, an insert ofrelatively harder wood in face joined by a longitiidinally"groovedcorner, an insert of relatively harder wood in said grooveexposed atsaid corner and pro jecting vbe yond'the edges of the groove, saidinsert having surfaces disposed in substantially the planes of thewooden edge and face of the door whereby to merge the said edge andface.

4. In combination, a door receiving member of relatively soft woodhaving a strip of relatively hard wood insert along a wear receivingcorner and having an abutment against which the door closes, and arelative- ]y soft wood door having a protecting strip of relatively hardwood insert along a corner facing said abutment when said door isclosed, whereby slivering or marring of the door' and frame isprevented.

EARL HEATH.

